10%盐酸丁卡因注射液是临床常用的麻醉剂,其制备方法与检查均按《黑龙江省医院制剂规范》执行,其含量测定方法为亚硝酸钠法。由于盐酸丁卡因在紫外区有吸收,根据这一特点,用紫外分光光度法测定盐酸丁卡因注射液含量与亚硝酸钠法做对照实验,结果满意,两种方法无显著性差异(P>0.1),回 10% tetracaine hydrochloride injection is commonly used in clinical anesthesia, its preparation methods and tests are in accordance with “norms of Heilongjiang Provincial Hospital,” the implementation of the method for the determination of sodium nitrite. Due to the absorption of tetracaine hydrochloride in the ultraviolet region, according to this characteristic, the content of tetracaine hydrochloride injection was determined by UV spectrophotometry in comparison with the sodium nitrite method. The results were satisfactory, and there was no significant difference between the two methods (P > 0.1), back